—Must you play that music so loud, uh? I’ve got an interview tomorrow! —Terribly sorry, buddy. I ______ you could hear it.
#101436
A
don’t realize
B
was not realizing
C
didn’t realize
D
must have realized
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I would have come sooner but I ________ that they were waiting. 
#104791
A
haven’t known
B
hadn’t known
C
don’t know
D
didn’t know
“I can’t do anything with it,”said Bob,__________at the colour TV set.
#103354
A
looking
B
to look
C
looked
D
having looked